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Howlite
Howlite

Petoskey Stone
Petoskey Stone



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Howlite
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Petoskey Stone

Howlite and Petoskey Stone Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.45-2.58Not Available
Amber
1 7.18
1.5 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Not Available
1.6 Cleavage
None
Not Available
1.7 Mohs Hardness
3-3.57
Amber
2 10
1.8 Chemical Composition
Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Not Available

Howlite and Petoskey Stone Chemical Formula

While comparing Howlite and Petoskey Stone physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Howlite and Petoskey Stone chemical formula.

  • Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
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Howlite and Petoskey Stone Specific Gravity

Another important criteria for qualitative analysis of gemstones is Howlite and Petoskey Stone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Howlite and Petoskey Stone Optical Properties during the identification of gemstone. Specific gravity of Howlite is Not Available whereas that of Petoskey Stone is Not Available.